Apparatus for supplying air under pressure



Oct. 13, 1931. c. G. wn-.soN

APPARATUS FOR SUPPLYING AIR UNDER PRESSURE I Filed Jul'y 27, 1928 Patented Oct.' 13, `v1931 UNITED STATES PATENT' ariel-: f

CHARLES Gr. WILSON, OF BRYAN, OHIO, ASSIGNOR T0 SERVICE STATION EQUIPMENT COMPANY, 0F BRYAN, OHIO, A ACORPORATION OF DELAWARE APPARATUS FOR SUPPLYING 'UNDER PRESSRE Application filed Jluly 27,

?.O leased.

In the preferred embodiment of the invention, I employ a suitable support for the dis-charge piping,this support being in the iorm of a belll crank lever having one arm to in supporting relation to the discharge piping and its other arm in opening engagement with the valve when the supporty is relieved of the weight of the discharge piping, the valve being supplied with means for closing it when the bell crank is moved by the dis-` charge piping when supported thereon. The portion ol the discharge piping vwhich is hung upon the bell crank lever is usually in the form of a -flexible hose having a valved A5 chuck at its discharge end. By means of the invention, leakage at the chuck is avoided, when the hose is not in use. Signal bells are usually employed to indicate when a predetermined quantity of air has been, passed 33 through the'piping. Untimely and improper operation of these bells is prevented by means of my improved mechanism. Improper operation of automatically operating valve controlling mechanism, if such be employed, is

also avoided.

The invention will be more fully explained in connec'ion with the accompanying drawings in which Fig. 1 is a side elevation with portions broken away and shown in section,

4@ the discharge hose being shown outk of use and upon one arm of the bell crank lever to permit the valve to be closed; Fig. 2 is a view similar to Fig. 1 but showing the bell crank lever relieved of the weight ofV the discharge hose which is shown connected with a pneumatic tire; Fig. 3 is a sectional view on line 3 3 of Fig. 1; and Fig. 4 is a sectional view on line 4-4 of Fig. 1.

The sourcelot1 air under pressure in inclu- 59 sive of a pipe 1 that extends from an ail' 192s. serial No. 295,792.

pressuretank and which terminates,lat' its" upper end, ina valve chamber 2. A valve 3 is normally pressed against its seat by' a spring 4, the valve being thus normally closed.' The piping 5 to which the air is supplied under pressure is connected at its lower endwith the chamber 6 that is formed by a continuation' of the valve casing 2 and which-is normally shut oli". from the interior of this valve casingv by the valve 3. A box 7 encloses the valve structure and parts that govern the same. The box is mounted, preferably lixedly, upon a hollow pedestal 8 through which the pipe 1 passes downwardly into connection with the air pressure tank that may be in the ground. .A

The valve controlling bell crank'lever has one arm 9 iixed upon a shaft 1() which is journaled at one end in the-body of the chamber 6 and at its other end in a'closureplug'll` which is provided Vfor thischamber.` The other arm 12 ofthe bell crank lever is also fixed upon said shaft and has a range of movement enabling it to be brought into `and out ofengagement with thestein 13 ofthe valve 3. IWhen the flexible hose` section 5 of the discharge piping is out of use, it is hung upon the bell crank arm 9, the weight of the hose turning the bellcrank lever in a clockwise direction to move the bell crank arm awayy from the stem 13 to permit the spring` 4 to close the valve. When the hose 5 is taken for use, it is lil-'ted from the bell crank arm 97 the spring 14 then being free to function to move the bell crank lever in a counterclockwise direction to operatively engage the bell crank arm 12 with the stem 13 which is moved by this bell crank arm in a valve opening direction against the force of the spring 4. It is understood that the spring 14 is not strong enough to overcome the weight of the hose when it is carried by the bell crank lever so that the hose is then able to move the bell cranklever clockwise and out of opening relation to the valve.

The discharging piping is usually provided with a valve chuck 15 at its discharge end which may be coupled with the nipple 16 of a pneumatic tire in a manner known and as illustrated in Fig. 2. The invention, howcer : usable and restored positions, a movable supl ever, is not to be limited to the employment of such a valve chuck. By means of the structure of my invention7 air is only permitted to flow through the piping,` when the discharge hose is taken for use, the HOW of air being cut off when the air hose is not in service and is carried by the bell crank lever with the advantages which have been set forth and With other advantages which may be attendant.

Changes may be made Without departing from the invention.

Having thus described my invention7 I claim: l

The combination with a source of air under pressure7 of discharge pipingshit-table into i port for the discharge piping and placed in one position by the piping when carried thereon and supplied Withmeans 'for moving;

Y it to an alternative position when relieved of the Weight of said ninira a valve casina a.

d l i n? an packed shaft extending therefrom7 said movagile support being secured to said shaft outside of said valve casing; 'for movement with the shaft, an arm extendingr 'from ysaid shaft 'inside said valve casing, an air receiving' cavity Within said valve casing and around said arm and communicating With said discharge :piping7 an air supply cavity7 a Wall separating' said air supply cavity from said Aair receiving cavity, a valve stem through said wall and adapted'to be engaged by said arin and a valve member on said stem in said air supply cavity rfor engaging' said Wall Vtor controlling the passage of'air therethrough 'from vsaidair supply cavity-to said air receiving` cavity.

In Witness whereof,` l hereunto subscribe my name.

CHARLES G. WVILSON. 

